<!--一级路由-->
<template>
    <section class="loginContainer">
        <div class="loginInner">
            <div class="login_header">
                <h2 class="login_logo">饿了没拼脚气外卖</h2>
                <div class="login_header_title">
                    <a href="javascript:;" :class="{on:loginWay}" @click='loginWay=true'>短信登录</a>
                    <a href="javascript:;" :class="{on:!loginWay}" @click='loginWay=false'>密码登录</a>
                </div>
            </div>
            <div class="login_content">
                <form @submit.prevent='login'>
                    <div :class="{on:loginWay}">
                        <section class="login_message">
                            <input type="tel" maxlength="11" placeholder="手机号" v-model='phone'>
                            <button :disabled="!rightPhone" class="get_verification" :class='{right_phone:rightPhone}'
                                @click.prevent='getCode'>{{computeTime?`已发送(${computeTime}s)`:"获取验证码"}}</button>
                        </section>
                        <section class="login_verification">
                            <input type="tel" maxlength="8" placeholder="验证码" v-model='code'>
                        </section>
                        <section class="login_hint">
                            温馨提示：未注册硅谷外卖帐号的手机号，登录时将自动注册，且代表已同意
                            <a href="javascript:;">《用户服务协议》</a>
                        </section>
                    </div>
                    <div :class="{on:!loginWay}">
                        <section>
                            <section class="login_message">
                                <input type="text" maxlength="11" placeholder="手机/邮箱/用户名"
                                    v-model='name'>
                            </section>
                            <section class="login_verification">

                                <input type="text" maxlength="8" placeholder="密码"
                                     v-if='showPwd' v-model='pwd'>
                                <input type="password" maxlength="8" placeholder="密码"
                                   v-else v-model='pwd'>

                                <div class="switch_button" :class='showPwd?"on":"off"' @click='showPwd=!showPwd'>
                                    <div class="switch_circle" :class='{right:showPwd}'></div>
                                    <span class="switch_text">{{showPwd?'abc':''}}</span>
                                </div>
                            </section>
                            <section class="login_message">
                                <input type="text" maxlength="11" placeholder="验证码"
                                    v-model='captcha'>
                                <img class="get_verification" src="http://localhost:4000/captcha"
                                    alt="captcha" @click='getCaptcha' ref='captcha'>
                            </section>
                        </section>
                    </div>
                    <button class="login_submit">登录</button>
                </form>
                <a href="javascript:;" class="about_us">关于我们</a>
            </div>
          <!--返回标签-->
            <a href="javascript:" class="go_back" @click='$router.back()'>
                <i class="iconfont icon-jiantou2"></i>
            </a>
        </div>
        <AlertTip :alertText='alertText' v-show='Alertshow' @closeTip ='closeTip2'/>
    </section>
</template>

<script>
    import AlertTip from '../../components/AlertTip/AlertTip'
    import {reqSendCode,reqSmsCode,reqPwdLogin} from '../../api'

    export default {
        data(){
            return{
                loginWay:true, //true代表短信登录，false代表密码登录
                phone:'',//手机号
                computeTime:0,//计时的事件
                showPwd:false, //是否显示密码
                pwd:'', //密码
                code:'',//短信验证码
                captcha:'',//图形验证码
                name:'',//用户名
                alertText:'',//提示文本
                Alertshow:false//是否显示提示框
            }
        },
        components:{
            AlertTip
        },
        computed:{
            rightPhone(){
                return /^1\d{10}$/.test(this.phone)
            }
        },
        methods:{
            //获取新的图片验证码
            getCaptcha(){
                //每次指定的src要不一样
                this.$refs.captcha.src = 'http://localhost:4000/captcha?time='+Date.now()
            },
            //关闭警告框
            closeTip2(){
               this.Alertshow=false
               this.alertText=''
            },
            //异步获取短信验证码
            async getCode(){
                //如果当前没有计时
                if(!this.computeTime){
                    //启动倒计时
                    this.computeTime = 30;
                    this.intervalId=setInterval(()=>{
                        this.computeTime--
                        if(this.computeTime<=0){
                            clearInterval(this.intervalId)
                        }
                    },1000)
                    //发送ajax请求(向指定手机号发送验证码短信)
                    const result = await reqSendCode(this.phone);
                    console.log(result)
                    if(result.code==1){
                        //显示提示
                         this.showAlert(result.msg)

                         if(this.computeTime){

                           this.computeTime = 0
                           clearInterval(this.intervalId)
                           this.intervalId = null

                         }


                    }
                }

                //发送ajax请求(向指定手机号发送验证码短信)
            },
            showAlert(alertText){
                 this.Alertshow=true
                 this.alertText=alertText
            },
            //异步登陆
            async login(){
                let result;
                //前台表单验证
                if(this.loginWay){//短信登录
                    const {rightPhone,phone,code} = this;

                    if(!rightPhone){
                        //手机号不正确
                       this.showAlert('手机号不正确')
                       return
                    }else if(!/^\d{6}$/.test(code)){
                        //验证码必须是6位数字
                        this.showAlert('验证码必须是6位数字')
                        return
                    }

                    //发送ajax请求短信登录
                    result = await reqSmsCode(phone,code)

                }else{//密码登录
                    const {name,pwd,captcha} = this;
                    if(!name){
                        //用户名必须制定
                        this.showAlert('用户名必须制定')
                    }else if(!pwd){
                        //密码必须指定
                        this.showAlert('密码必须指定')
                    }else if(!captcha){
                        //验证码必须指定
                        this.showAlert('验证码必须指定')
                    }

                     //发送ajax请求密码登录
                    result = await reqPwdLogin({name,pwd,captcha})

                }


                if(this.computeTime){

                       this.computeTime = 0
                       clearInterval(this.intervalId)
                       this.intervalId = null

                }

                //根据结果数据处理

                if(result.code==0){
                     const user = result.data
                     //将user保存到vuex的state
                     this.$store.dispatch('recordUser',user)
                     //去个人中心界面
                     this.$router.replace('/profile')
                }else{
                    //显示新的突破验证码
                    this.getCaptcha()
                    //显示警告提示
                    this.showAlert(result.msg)
                }

            }
        }
    }
</script>

<style lang='stylus' rel='stylesheet/stylus'>
     @import '../../common/stylus/mixins.styl'
    .loginContainer
      width 100%
      height 100%
      background #fff
      .loginInner
        padding-top 60px
        width 80%
        margin 0 auto
        .login_header
          .login_logo
            font-size 40px
            font-weight bold
            color #02a774
            text-align center
          .login_header_title
            padding-top 40px
            text-align center
            >a
              color #333
              font-size 14px
              padding-bottom 4px
              &:first-child
                margin-right 40px
              &.on
                color #02a774
                font-weight 700
                border-bottom 2px solid #02a774
        .login_content
          >form
            >div
              display none
              &.on
                display block
              input
                width 100%
                height 100%
                padding-left 10px
                box-sizing border-box
                border 1px solid #ddd
                border-radius 4px
                outline 0
                font 400 14px Arial
                &:focus
                  border 1px solid #02a774
              .login_message
                position relative
                margin-top 16px
                height 48px
                font-size 14px
                background #fff
                .get_verification
                  position absolute
                  top 50%
                  right 10px
                  transform translateY(-50%)
                  border 0
                  color #ccc
                  font-size 14px
                  background transparent
                  &.right_phone
                    color black
              .login_verification
                position relative
                margin-top 16px
                height 48px
                font-size 14px
                background #fff
                .switch_button
                  font-size 12px
                  border 1px solid #ddd
                  border-radius 8px
                  transition background-color .3s,border-color .3s
                  padding 0 6px
                  width 30px
                  height 16px
                  line-height 16px
                  color #fff
                  position absolute
                  top 50%
                  right 10px
                  transform translateY(-50%)
                  &.off
                    background #fff
                    .switch_text
                      float right
                      color #ddd
                  &.on
                    background #02a774
                  >.switch_circle
                    //transform translateX(27px)
                    position absolute
                    top -1px
                    left -1px
                    width 16px
                    height 16px
                    border 1px solid #ddd
                    border-radius 50%
                    background #fff
                    box-shadow 0 2px 4px 0 rgba(0,0,0,.1)
                    transition transform .3s
                    &.right
                        left:30px

              .login_hint
                margin-top 12px
                color #999
                font-size 14px
                line-height 20px
                >a
                  color #02a774
            .login_submit
              display block
              width 100%
              height 42px
              margin-top 30px
              border-radius 4px
              background #4cd96f
              color #fff
              text-align center
              font-size 16px
              line-height 42px
              border 0
          .about_us
            display block
            font-size 12px
            margin-top 20px
            text-align center
            color #999
        .go_back
          position absolute
          top 5px
          left 5px
          width 30px
          height 30px
          >.iconfont
            font-size 20px
            color #999
</style>
